Ultrastar C10K600 is a 2.5-inch 10,000 RPM hard drive that leads the industry with 18% faster sequential and up to 15% random performance than the nearest competitor. The high-performance SAS 6 GB/s interface delivers data reliability, availability and scalability and is the only small form factor SAS drive in the industry to pack a 64MB cache buffer to optimize the read/write response time.